Here's what Energy Suspension says about their dust boots

I recently installed these with 1.00 bars, although the diameter of the bar doesn't matter for initial installation over the hex. (The hex size is standard.) I had previously read concerns about them being hard to install. On my first attempt, I tried with no heating and only whatever residual grease might have been on the hex from installing the bar through the rear anchor. I put a flat metal plate at the LCA anchor and simply tried pushing the bar through the boot, using the plate as a support. I was unable to do so. I then used an electrical space heater to heat the boot up. I don't think it even got to 200F. With the boot heated, I was able to push the torsion bar through without any tearing. It still took quite a bit of effort. If it matters, I have Firm Feel bars.